78538808482428 has 72 divisors (see below), whose sum is σ = 218134365157632. Its totient is φ = 21917807011296.

The previous prime is 78538808482423. The next prime is 78538808482451. The reversal of 78538808482428 is 82428480883587.

It is a self number, because there is not a number n which added to its sum of digits gives 78538808482428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78538808482423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1553107300 + ... + 1553157867.

Almost surely, 2^{78538808482428} is an apocalyptic number.

It is an amenable number.

78538808482428 is an abundant number, since it is smaller than the sum of its proper divisors (139595556675204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78538808482428 is a wasteful number, since it uses less digits than its factorization.

78538808482428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106265231 (or 3106265222 counting only the distinct ones).

The product of its (nonzero) digits is 1761607680, while the sum is 75.

The spelling of 78538808482428 in words is "seventy-eight trillion, five hundred thirty-eight billion, eight hundred eight million, four hundred eighty-two thousand, four hundred twenty-eight".